asm

asm无参数调用c51

NAME	MyMAINPro	;目标模块名
;
EXTRN 	CODE (call1)	;声明外部c51函数
NCIRCLE DATA 0x3a	;放置转速的绝对地址
;NCIRCLE EQU 0x3a	;放置转速的绝对地址

PROG	SEGMENT	CODE
CONST	SEGMENT	CODE
VAR1	SEGMENT	DATA
BITVAR	SEGMENT	BIT
STACK	SEGMENT	IDATA

	RSEG  STACK
	DS    10H  ; 分配16 Bytes Stack

	CSEG  AT   0
	USING	0  ; Register-Bank 0
; Execution starts at address 0 on power-up.
	JMP   START

	RSEG  PROG
; first set Stack Pointer
START:	MOV   SP,#STACK-1

	mov NCIRCLE,#10
	;mov 0x3a,#10

	mov 0x70,#9
	mov 0x71,#9
	mov 0x72,#0
	mov 0x73,#0

	;mov DPTR,#WHM
	;push DPL
	;push DPH
	lcall call1
	
WHM:	mov R1,0x74
	mov R2,0x75
	mov R3,0x76
	mov R4,0x77
	sjmp START

	RSEG  CONST
TXT: 	DB    'TEST PROGRAM',00H

	; only for demonstration
	RSEG  VAR1
DUMMY:	DS    21H	; 分配21H Bytes 

	; TXTBIT = 0 read text from CODE  Memory
	; TXTBIT = 1 read text from XDATA Memory
	RSEG  BITVAR
TXTBIT:	DBIT  1

	END